A088837 - cp's OEIS frontend

A088837 Numerator of sigma(2*n)/sigma(n). Denominator see in A038712.

n	a(n)
1	3
2	7
3	3
4	15
5	3
6	7
7	3
8	31
9	3
10	7
11	3
12	15
13	3
14	7
15	3
16	63
17	3
18	7
19	3
20	15
21	3
22	7
23	3
24	31
25	3
26	7
27	3
28	15
29	3
30	7
31	3
32	127
33	3
34	7
35	3
36	15
37	3
38	7
39	3
40	31
41	3
42	7
43	3
44	15
45	3
46	7
47	3
48	63
49	3
50	7
51	3
52	15
53	3
54	7
55	3
56	31
57	3
58	7
59	3
60	15
61	3
62	7
63	3
64	255
65	3
66	7
67	3
68	15
69	3
70	7
71	3
72	31
73	3
74	7
75	3
76	15
77	3
78	7
79	3
80	63
81	3
82	7
83	3
84	15
85	3
86	7
87	3
88	31
89	3
90	7
91	3
92	15
93	3

[3, 7, 3, 15, 3, 7, 3, 31, 3, 7, 3, 15, 3, 7, 3, 63, 3, 7, 3, 15, 3, 7, 3, 31, 3, 7, 3, 15, 3, 7, 3, 127, 3, 7, 3, 15, 3, 7, 3, 31, 3, 7, 3, 15, 3, 7, 3, 63, 3, 7, 3, 15, 3, 7, 3, 31, 3, 7, 3, 15, 3, 7, 3, 255, 3, 7, 3, 15, 3, 7, 3, 31, 3, 7, 3, 15, 3, 7, 3, 63, 3, 7, 3, 15, 3, 7, 3, 31, 3, 7, 3, 15, 3]

cp's OEIS Frontend

A088837 Numerator of sigma(2*n)/sigma(n). Denominator see in A038712.

Table of values

List of values

n	a(n)
1	3
2	7
3	3
4	15
5	3
6	7
7	3
8	31
9	3
10	7
11	3
12	15
13	3
14	7
15	3
16	63
17	3
18	7
19	3
20	15
21	3
22	7
23	3
24	31
25	3
26	7
27	3
28	15
29	3
30	7
31	3
32	127
33	3
34	7
35	3
36	15
37	3
38	7
39	3
40	31
41	3
42	7
43	3
44	15
45	3
46	7
47	3
48	63
49	3
50	7
51	3
52	15
53	3
54	7
55	3
56	31
57	3
58	7
59	3
60	15
61	3
62	7
63	3
64	255
65	3
66	7
67	3
68	15
69	3
70	7
71	3
72	31
73	3
74	7
75	3
76	15
77	3
78	7
79	3
80	63
81	3
82	7
83	3
84	15
85	3
86	7
87	3
88	31
89	3
90	7
91	3
92	15
93	3

n	a(n)
1	3
2	7
3	3
4	15
5	3
6	7
7	3
8	31
9	3
10	7
11	3
12	15
13	3
14	7
15	3
16	63
17	3
18	7
19	3
20	15
21	3
22	7
23	3
24	31
25	3
26	7
27	3
28	15
29	3
30	7
31	3
32	127
33	3
34	7
35	3
36	15
37	3
38	7
39	3
40	31
41	3
42	7
43	3
44	15
45	3
46	7
47	3
48	63
49	3
50	7
51	3
52	15
53	3
54	7
55	3
56	31
57	3
58	7
59	3
60	15
61	3
62	7
63	3
64	255
65	3
66	7
67	3
68	15
69	3
70	7
71	3
72	31
73	3
74	7
75	3
76	15
77	3
78	7
79	3
80	63
81	3
82	7
83	3
84	15
85	3
86	7
87	3
88	31
89	3
90	7
91	3
92	15
93	3

n	a(n)
1	3
2	7
3	3
4	15
5	3
6	7
7	3
8	31
9	3
10	7
11	3
12	15
13	3
14	7
15	3
16	63
17	3
18	7
19	3
20	15
21	3
22	7
23	3
24	31
25	3
26	7
27	3
28	15
29	3
30	7
31	3
32	127
33	3
34	7
35	3
36	15
37	3
38	7
39	3
40	31
41	3
42	7
43	3
44	15
45	3
46	7
47	3
48	63
49	3
50	7
51	3
52	15
53	3
54	7
55	3
56	31
57	3
58	7
59	3
60	15
61	3
62	7
63	3
64	255
65	3
66	7
67	3
68	15
69	3
70	7
71	3
72	31
73	3
74	7
75	3
76	15
77	3
78	7
79	3
80	63
81	3
82	7
83	3
84	15
85	3
86	7
87	3
88	31
89	3
90	7
91	3
92	15
93	3